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The direct electrochemistry of viable Escherichia coli
Journal of Electroanalytical Chemistry, 2021Abstract We developed a novel method of microwave irradiation to deal with Escherichia coli (E. coli), realized the trans-membrane and trans-wall direct electron transfer of Guanine in viable E. coli. Typical surface controlled irreversible electrode process of E. coli was achieved by cyclic voltammetry with the participating of two electrons and two
Jing Zhang +7 more
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Direct electrochemistry of pentachlorophenol hydroxylase
SPIE Proceedings, 2001The direct electrochemistry of flavin-containing monooxygenase, pentachlorophenol hydroxlase (PCPH), has been investigated under a variety of conditions. PCPH underwent a two-electron process on the electrodes, which correspond to the reduction/oxidation of FAD/FADH2 within the enzyme. The electrochemical response of PCPH relies on the interface of the
Wei-hong Xie +3 more
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Direct Electrochemistry of Myoglobin in Titanate Nanotubes Film
Analytical Chemistry, 2005Titanate nanotubes (TNT) were proven to be efficient support matrixes for the immobilization of myoglobin (Mb). A comparative study was performed using the corresponding analogue, nanocrystalline anatase TiO2 (TNP). UV-visible absorption and FT-IR spectra show that Mb was not obviously denatured in TNT film in contrast to the significant denaturation ...
Aihua, Liu +3 more
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Direct electrochemistry of catalase on glassy carbon electrodes
Bioelectrochemistry, 2002Catalase was investigated as a possible catalyst of the electrochemical reduction of oxygen on glassy carbon electrodes. The presence of catalase dissolved in solution only provoked a moderate current increase, which was fully explained by the catalase-catalysed disproportionation of hydrogen peroxide (Scheme I).
M E, Lai, A, Bergel
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Direct electrochemistry of hemoglobin in gold nanowire array
Biosensors and Bioelectronics, 2007Gold nanowire array has been proven to be efficient support matrixes for the immobilization of hemoglobin (Hb). The vertically oriented nanowire array provides an ordered well-defined 3D structure with nanowire density approximately 5 x 10(8)cm(2). The adsorption of ferritin onto the nanowire surface was visualized by transmission electron microscopy ...
Minghui, Yang +5 more
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Direct electrochemistry of hemoglobin in the hyaluronic acid films
Journal of Biochemical and Biophysical Methods, 2007Hemoglobin (Hb) in the hyaluronic acid (HA) was cast at pyrolytic graphite (PG) electrodes for researching its electrochemical and electrocatalytic properties. The formal potential and electron transfer rate constant of Hb on HA films were determined, and the stability of the films, the pH effect, and the influence of supporting electrolyte ...
Ling, Ma, Yanni, Tian, Zhijiang, Rong
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Direct electrochemistry of cytochrome c in the presence of heteropolytungstates
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1989Proteins are known to undergo irreversible adsorption on electrode surfaces that prevents electron transfer. Various methods have been proposed in order to achieve reversible voltammetry of cytochrome c, a highly positively charged electron transfer protein.
G. Chottard, D. Lexa
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Direct Electrochemistry of Polyphenol Oxidase
2014The electrochemistry of banana tissues on a carbon paste electrode modified with multi-walled carbon nanotubes (MWCNTs) is presented. Cyclic voltammetry is applied to investigate the direct electrochemistry of banana tissues i.e. a source of polyphenol oxidase (PPO). A redox couple with an anodic and counterpart cathodic peak is obtained. The influence
Raoof, Jahan Bakhsh +3 more
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Direct Electrochemistry of Proteins and Enzymes
1991Publisher Summary This chapter discusses direct electrochemistry of metalloproteins and redox enzymes. The electron transport chain is composed of a number of electron transfer complexes firmly bound to the biological membrane, and electron-carrying groups in these complexes are flavins, iron–sulfur clusters, heme groups, and copper ions.
Liang-Hong Guo, H. Allen, O. Hill
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Chitosan-Promoted Direct Electrochemistry of Human Sulfite Oxidase
The Journal of Physical Chemistry B, 2017Direct electrochemistry of human sulfite oxidase (HSO) has been achieved on carboxylate-terminated self-assembled monolayers cast on a Au working electrode in the presence of the promoter chitosan. The modified electrode facilitates a well-defined nonturnover redox response from the heme cofactor (FeIII/II) in 750 mM Tris, MOPS, and bicine buffer ...
Palraj Kalimuthu +3 more
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